Have regularly joined a 6mm with a 10+mm using the EDK. The failure mode is the EDK capsizes towards the tails. 18 inch tails. Tied so the skinny has to roll over the fat to capsize. Lately I also tie a backup knot with skinny tail around the fat tail.

Have regularly joined a 6mm with a 10+mm using the EDK. The failure mode is the EDK capsizes towards the tails. 18 inch tails. Tied so the skinny has to roll over the fat to capsize. Lately I tie backup knot with skinny tail around the fat tail.

So why bring it up again, as opposed to just using the search box? You are right, this has been covered a million times, and every answer made in this post so far has already been made by someone else in a duplicate thread. But in short, yes you can join dissimilar diameters.

The technical term for this would be a Rethreaded Figure 8, or Flemish Bend. It's important to distinguish between this and an "Abnormal" Figure 8 (tied similar to how you'd tie an overhand), which can fail under small loads.

The whole EDK failure under small loads thing is bogus, tests have been run and it takes a couple thousand pounds just to make the knot roll... with substantial tails you have nothing to worry about, plus less snag risk

The whole EDK failure under small loads thing is bogus, tests have been run and it takes a couple thousand pounds just to make the knot roll... with substantial tails you have nothing to worry about, plus less snag risk

The whole EDK failure under small loads thing is bogus, tests have been run and it takes a couple thousand pounds just to make the knot roll... with substantial tails you have nothing to worry about, plus less snag risk

If you're replying to me, you misread my statement. I said that an "abnormal" figure 8 can fail under small loads. An overhand is bomber, and what most people should be using most of the time.